CN108336507B - Pair feed traveling wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication - Google Patents
Pair feed traveling wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication Download PDFInfo
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- CN108336507B CN108336507B CN201810089124.XA CN201810089124A CN108336507B CN 108336507 B CN108336507 B CN 108336507B CN 201810089124 A CN201810089124 A CN 201810089124A CN 108336507 B CN108336507 B CN 108336507B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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Abstract
The invention discloses a double-feed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication, which comprises a metal C-shaped waveguide power divider, wherein a metal C-shaped waveguide antenna radiation unit is arranged between two ports of the metal C-shaped waveguide power divider, a feed metal diaphragm and a metal disc are arranged on the inner wall of the metal C-shaped waveguide power divider, and the double-feed wave type C-shaped waveguide antenna array further comprises a coaxial adapter which is inserted into the metal C-shaped waveguide power divider through a metal probe. The antenna has the advantages of simple structure, small size and convenience for processing and forming, realizes impedance matching of the broadband, and also considers miniaturization and broadband at the same time. In addition, the relative bandwidth of VSWR <2 > of the invention can reach 8.2%, and the main lobe gain is larger, the side lobe is smaller, and the radiation efficiency is improved.
Description
Technical Field
The invention relates to the field of satellite communication, in particular to a double-feed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication.
Background
With the development of society, satellite communication plays an increasingly important role in life, and as an important component of a system, an antenna has been required to have an increasingly higher bandwidth and higher gain. The broadband antenna can meet the requirement of high-speed transmission of a large amount of information between a satellite and the ground, and can enable a pair of antennas to work in a plurality of communication system frequency bands, so that the number of antennas on a carrier is reduced, and the miniaturization of communication equipment is realized. With the further development of microwave technology, waveguide antennas have gained widespread attention. Meanwhile, the rapid development of the waveguide antenna has achieved a good effect in realizing the miniaturization and the broadband of the antenna, but the antenna designed by the existing waveguide structure still has many defects, and needs to be further analyzed and optimized.
In recent years, some foreign scholars have made significant progress in the research of waveguide slot antenna arrays, for example, Robert s.elliott published a paper entitled "An Improved Design Procedure for smallararrays of round Slots" in IEEE Transactions on Antennas and Propagation (vol.ap-31, No.1, january.1983).
A large number of researchers for waveguide slot antenna arrays are also emerging in China. In the 'design of broadband single-ridge waveguide slot antenna array' published by Jinjian, a standing wave resonant waveguide slot antenna array is designed, and in the design, in order to improve the working bandwidth, the volume of the antenna array is larger. It can be seen that the current research based on waveguide slot antenna arrays is not mature, miniaturization and broadband are not compatible, and many problems need to be solved.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a pair-fed wave type C-shaped waveguide antenna array which can simultaneously realize miniaturization and broadband and is applied to Ku frequency band satellite communication.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a pair-feed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication, which comprises a metal C-shaped waveguide power divider, wherein a metal C-shaped waveguide antenna radiation unit is arranged between two ports of the metal C-shaped waveguide power divider, a feed metal diaphragm and a metal disc are arranged on the inner wall of the metal C-shaped waveguide power divider, and the pair-feed wave type C-shaped waveguide antenna array further comprises a coaxial adapter which is inserted into the metal C-shaped waveguide power divider through a metal probe.
Further, the length of the gap of the radiating unit of the metal C-shaped waveguide antenna is three fifths of the waveguide wavelength. This may make the lobe better.
Furthermore, the metal C-shaped waveguide power divider is smoothly connected to the metal C-shaped waveguide antenna radiation unit through a bent waveguide. This reduces the standing wave ratio.
Further, the metal C-shaped waveguide power divider is divided into two sections by the coaxial adapter, and one section is longer than the other section by one half of waveguide wavelength. This creates a phase difference that favors traveling wave feed.
Further, the length and the width of the feed metal diaphragm are respectively one fifth of the waveguide wavelength. This broadens the bandwidth and reduces the standing-wave ratio.
Further, the diameter of the metal disc is one fifth of the waveguide wavelength. This broadens the bandwidth and reduces the standing-wave ratio.
Further, the feed metal diaphragm includes two rectangle metal blocks, sets up for coaxial adapter symmetry. This facilitates equal proportion power allocation.
Has the advantages that: the invention discloses a pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication, which has the following beneficial effects compared with the prior art:
1) the antenna has simple structure and small size, is convenient to process and form, realizes the impedance matching of the broadband, and also considers the miniaturization and the broadband at the same time;
2) the relative bandwidth of VSWR <2 can reach 8.2%, and the main lobe gain is bigger, and the side lobe is less, has improved radiation efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an antenna array in an embodiment of the present invention;
FIG. 1(a) is a front view;
FIG. 1(b) is a top view;
FIG. 1(c) is a side view;
FIG. 2 is a return loss plot of an antenna array in an embodiment of the present invention;
FIG. 3 is a radiation pattern of the YOZ plane at 12.2GHz for the antenna array in an embodiment of the present invention;
fig. 4 is a radiation pattern of the YOZ plane at 12.7GHz for an antenna array in an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
The specific embodiment discloses a pair-feed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication, as shown in FIGS. 1(a), (b) and (C), the pair-feed wave type C-shaped waveguide antenna array comprises a metal C-shaped waveguide power divider 2, a metal C-shaped waveguide antenna radiation unit 1 is arranged between two ports of the metal C-shaped waveguide power divider 2, a feed metal diaphragm 3 and a metal disc 4 are arranged on the inner wall of the metal C-shaped waveguide power divider 2, and the pair-feed wave type C-shaped waveguide antenna array further comprises a coaxial adapter 5, wherein the coaxial adapter 5 is inserted into the metal C-shaped waveguide power divider 2 through a metal probe.
The metal C-shaped waveguide antenna radiation unit 1 comprises 8 gaps, and mutual feeding with a phase difference of 180 degrees is performed from two ends to form a mutual feeding wave type antenna array. The slot length is three fifths of the waveguide wavelength.
The metal C-shaped waveguide power divider 2 is formed by combining a horizontal C-shaped waveguide and a bent C-shaped waveguide and is smoothly connected into the metal C-shaped waveguide antenna radiation unit 1 through the bent waveguide. The metal C-shaped waveguide power divider 2 is divided into two sections by a coaxial adapter 5, and one section is longer than the other section by one half of waveguide wavelength.
The diameter of the metal disc 4 is one fifth of the waveguide wavelength.
The coaxial adapter 5 is a 50 ohm coaxial line and is used for being connected with the metal C-shaped waveguide power divider 2.
The antenna is a waveguide slot antenna, and has a great effect on the extension of the bandwidth of the antenna for a feed wave type structure. Both the feed metal diaphragm 3 and the metal disk 4 are for reducing VSWR.
Fig. 2 is a simulated VSWR according to the present embodiment, and it can be seen from the graph that the service frequency band of the fed-wave C-shaped waveguide antenna array applied to Ku-band satellite communication ranges from 11.7GHz to 12.7 GHz.
Fig. 3 and 4 are radiation patterns of the YOZ plane at two frequency points, and it can be seen that the antenna has good radiation performance at both frequency points.
Claims (7)
1. A pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication is characterized in that: divide ware (2) including metal C style of calligraphy waveguide merit, be equipped with metal C style of calligraphy waveguide antenna radiating element (1) between two ports that ware (2) were divided to metal C style of calligraphy waveguide merit, be equipped with feed metal diaphragm (3) and metal disc (4) on the inner wall that ware (2) were divided to metal C style of calligraphy waveguide merit, in addition still include coaxial adapter (5), during ware (2) were divided to metal C style of calligraphy waveguide merit is inserted through metal probe in coaxial adapter (5), metal disc (4) coaxial adapter (5) relatively set up on the inner wall that ware (2) were divided to metal C style of calligraphy waveguide merit.
2. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the length of the gap of the metal C-shaped waveguide antenna radiation unit (1) is three fifths of the waveguide wavelength.
3. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the metal C-shaped waveguide power divider (2) is smoothly connected into the metal C-shaped waveguide antenna radiation unit (1) through a bent waveguide.
4. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the metal C-shaped waveguide power divider (2) is divided into two sections by a coaxial adapter (5), and one section is longer than the other section by half of waveguide wavelength.
5. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the length and the width of the feed metal diaphragm (3) are respectively one fifth of the waveguide wavelength.
6. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the diameter of the metal disc (4) is one fifth of the wave guide wavelength.
7. The pair-fed wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication according to claim 1, wherein: the feed metal diaphragm (3) comprises two rectangular metal blocks which are symmetrically arranged relative to the coaxial adapter (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810089124.XA CN108336507B (en) | 2018-01-30 | 2018-01-30 | Pair feed traveling wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication |
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| CN201810089124.XA CN108336507B (en) | 2018-01-30 | 2018-01-30 | Pair feed traveling wave type C-shaped waveguide antenna array applied to Ku frequency band satellite communication |
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| CN108336507A CN108336507A (en) | 2018-07-27 |
| CN108336507B true CN108336507B (en) | 2020-07-14 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5726666A (en) * | 1996-04-02 | 1998-03-10 | Ems Technologies, Inc. | Omnidirectional antenna with single feedpoint |
| CN101000979A (en) * | 2006-12-30 | 2007-07-18 | 中国电子科技集团公司第三十八研究所 | Broadband single ridge waveguide broadside longitudinal seam standing-wave antenna |
| CN201134509Y (en) * | 2007-10-31 | 2008-10-15 | 中国电子科技集团公司第三十八研究所 | Wideband double L shaped waveguide narrow rim gap array antenna |
| WO2015168598A1 (en) * | 2014-05-02 | 2015-11-05 | AMI Research & Development, LLC | Quasi tem dielectric travelling wave scanning array |
| CN106058476A (en) * | 2016-06-17 | 2016-10-26 | 中国人民解放军国防科学技术大学 | High-power microwave dense-slot waveguide antenna |
| CN107196049A (en) * | 2017-06-15 | 2017-09-22 | 东南大学 | A kind of array antenna |
-
2018
- 2018-01-30 CN CN201810089124.XA patent/CN108336507B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5726666A (en) * | 1996-04-02 | 1998-03-10 | Ems Technologies, Inc. | Omnidirectional antenna with single feedpoint |
| CN101000979A (en) * | 2006-12-30 | 2007-07-18 | 中国电子科技集团公司第三十八研究所 | Broadband single ridge waveguide broadside longitudinal seam standing-wave antenna |
| CN201134509Y (en) * | 2007-10-31 | 2008-10-15 | 中国电子科技集团公司第三十八研究所 | Wideband double L shaped waveguide narrow rim gap array antenna |
| WO2015168598A1 (en) * | 2014-05-02 | 2015-11-05 | AMI Research & Development, LLC | Quasi tem dielectric travelling wave scanning array |
| CN106058476A (en) * | 2016-06-17 | 2016-10-26 | 中国人民解放军国防科学技术大学 | High-power microwave dense-slot waveguide antenna |
| CN107196049A (en) * | 2017-06-15 | 2017-09-22 | 东南大学 | A kind of array antenna |
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